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11951630153 = 73163720961
BaseRepresentation
bin10110010000101111…
…10110011101001001
31010211221002201101122
423020113312131021
5143434104131103
65253540525025
7602113115531
oct131027663511
933757081348
1011951630153
1150834246a1
1223966b0775
13118612a408
1481542a4c1
1549e3b8b38
hex2c85f6749

11951630153 has 4 divisors (see below), whose sum is σ = 12115351188. Its totient is φ = 11787909120.

The previous prime is 11951630137. The next prime is 11951630183. The reversal of 11951630153 is 35103615911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3249912064 + 8701718089 = 57008^2 + 93283^2 .

It is a cyclic number.

It is not a de Polignac number, because 11951630153 - 24 = 11951630137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11951630183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81860408 + ... + 81860553.

It is an arithmetic number, because the mean of its divisors is an integer number (3028837797).

Almost surely, 211951630153 is an apocalyptic number.

It is an amenable number.

11951630153 is a deficient number, since it is larger than the sum of its proper divisors (163721035).

11951630153 is an equidigital number, since it uses as much as digits as its factorization.

11951630153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163721034.

The product of its (nonzero) digits is 12150, while the sum is 35.

The spelling of 11951630153 in words is "eleven billion, nine hundred fifty-one million, six hundred thirty thousand, one hundred fifty-three".

Divisors: 1 73 163720961 11951630153